A Lab Technician Adds 0

question 52

Multiple Choice

A lab technician adds 0.015 mol of KOH to 1.00 L of 0.0010 M Ca(NO₃) ₂. K_sp = 6.5 × 10⁻⁶ for Ca(OH) ₂) . Which of the following statements is correct?

• A)Calcium hydroxide precipitates until the solution is saturated.
• B)The solution is unsaturated and no precipitate forms.
• C)The concentration of calcium ions is reduced by the addition of the hydroxide ions.
• D)One must know K _sp for calcium nitrate to make meaningful predictions on this system.
• E)The presence of KOH will raise the solubility of Ca(NO ₃)₂.

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Definitions:

Homo Sapiens

The scientific name for modern humans, a species characterized by a high level of intelligence and complex social behaviors.

Modern Humans

Homo sapiens, the only extant human species, characterized by advanced cognitive abilities, language, and the ability to create complex tools and cultures.

Eukarya

One of the three domains of life, consisting of organisms with cells that have a nucleus enclosed within membranes, unlike bacteria and archaea.

Protista

A kingdom of simple eukaryotic organisms, usually unicellular, that are neither plants, animals, nor fungi, including amoebas, and algae.